AAT1275 Analogic Corporation, AAT1275 Datasheet - Page 16

• Manufacturer Part Number: AAT1275
• Manufacturer: Analogic Corporation

For the Sumida CDRH2D14-2R2 inductor, I
5V Output Capacitor
I
I
I
I
I
I
P
ΔV
C
16
PP
P
PK
V
V
RMS
LOSS(INDUCTOR)
OUT(MIN)
=
= I
= I
OUT
=
= I
1 - D
=
P
P
V
P
I
- I
- I
= 0.05V
O
IN(MIN)
+
PP
PP
=
I
L · F
I
PK
PP
2
= 0.9A - 0.7A = 0.20A
2
I
F
· D
OUT
+ I
S
= I
S
· ΔV
MAX
PK
· D
2
3
RMS
· I
MAX
OUT
V
· DCR = (590mA)
+ I
=
V
2
800kHz · 0.05V
=
0.3A · 0.46
0.9A
2
2
+ 0.9A · 0.2A + 0.2A
· 94mΩ = 32mW
= 3.0µF; use 4.7µF 10V MLC
SAT
3
= 1.0A, I
Boost Converter with USB Power Switch
DC(MAX)
2
= 0.59A
= 1.6A and DCR = 94mΩ.
AAT1275
1275.2006.12.1.2